Your RF Cafe

Right Triangle (Pythagorean) 
Equilateral Triangle 
Rectangle 
Parallelogram 
General Quadrilateral (Bretschneider's Formula) 
CyclicInscriptable Quadrilateral 
General Triangle h_{c }= length of altitude on side c, t_{c }= length of bisector of angle C, m_{c}^{ } = length of median to side c. (Law of Cosines) (Heron’s formula) 
Rhombus 
Trapezoid 
Regular Polygon 
Cyclic Quadrilateral (Brahmagupta’s formula) 